Myriad MD9612FP Flash Poll Rack-Mount Modem User s Guide MD9612FP USER S GUIDE XXX Page i REV. A

Transcription

1 Myriad MD9612FP Flash Poll Rack-Mount Modem User s Guide XXX Page i REV. A

2 The products and programs described in this User s Guide are licensed products of Raymar Information Technology, Inc. This User s Guide contains proprietary information protected by copyright, and this User s Guide and all accompanying hardware and documentation are copyrighted. Raymar Information Technology, Inc. does not warrant that the hardware will work properly in all environments and applications, and makes no warranty and representation, either implied or expressed, with respect to the quality, performance, merchantability, or fitness for a particular purpose. Information in this User s Guide is subject to change without notice and does not represent a commitment on the part of Raymar Information Technology, Inc. Raymar Information Technology, Inc. assumes no responsibility for any inaccuracies that may be contained in this User s Guide. Raymar Information Technology, Inc. makes no commitment to update or keep current the information in this User s Guide, and reserves the right to make changes to this User s Guide and/or product without notice. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or information storage and retrieval systems, for any purpose other than the purchaser's personal use, without the express written permission of Raymar Information Technology, Inc. Copyright 2012 Raymar Information Technology, Inc Roseville Road Sacramento, California Tel: Direct: (916) Fax: (916) XXX Page ii REV. A

3 Compliances This device complies with Part 15A of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15A of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and the receiver. Connect the equipment to an outlet on a circuit other than the one to which the receiver is connected. Consult the dealer or an experienced radio/tv technician for help. If none of these actions resolves the problem, consult your distributor or an experienced radio/television technician for additional suggestions. Additionally, Section , paragraph d), of the FCC Rules and Regulations states: Where special accessories, such as shielded cables, are required in order to meet FCC regulations, shielded cables must be used with this equipment. Operation with non-approved equipment or unshielded cables is likely to result in interference to radio and TV reception. The user is cautioned that changes and modifications to this equipment without the approval of the manufacturer could void the user s authority to operate this equipment XXX Page iii REV. A

4 Contents CHAPTER 1 INTRODUCTION...1 FEATURES... 2 APPLICATIONS... 2 CHAPTER 2 INSTALLATION...4 UNPACKING YOUR HARDWARE... 4 ADDITIONAL ITEMS YOU NEED... 4 HARDWARE OVERVIEW... 4 Front View... 4 Component View... 5 INSTALLATION SUMMARY... 7 CONFIGURING THE MODEM... 7 SW1 DIP Switch Settings... 8 SW2 DIP Switch Settings SW3 DIP Switch Settings INSTALLING THE MODEM CONNECTING TO A TRANSMISSION LINE Modular Jack Connectors CONNECTING AN RS-232 DEVICE LEDS LOOPBACK CONTROL SWITCH APPENDIX A TROUBLESHOOTING...23 PROBLEM SOLVING APPENDIX B SPECIFICATIONS...24 GENERAL SPECIFICATIONS MECHANICAL SPECIFICATIONS BACK-TO-BACK CONNECTIONS TO A SECOND MODEM RS-232 (RTU) Interface ENVIRONMENTAL SPECIFICATIONS APPENDIX C LIMITED PRODUCT WARRANTY 28 APPENDIX D RMA PROCEDURE XXX Page iv REV. A

5 Chapter 1 Introduction Congratulations for purchasing the finest industrial-grade fast-poll rackmount modem available. The Raymar-Telenetics MD9612FP (Flash Poll) modem is a 9600/4800/ bps rack-mount modem designed for 4-wire, full-duplex or 2-wire, half-duplex operation over a voice-band leased line. The modem is designed utilizing the latest digital-signal processing (DSP) technology to achieve high performance. The modem employs Raymar-Telenetics proprietary modulation and encoding scheme to achieve fast modem training time. It is also backward compatible with Bell 202 modems. The modem can be installed in an Myriad Rack (18 slots, 3U) from Raymar-Telenetics. The modem occupies only one rack slot, eliminating the hassle of equipment trays and power bricks required for Stand Alone modems. The modem is powered from the modem rack. The MD9612FP modem is ideally suited for multi-point communication systems that require fast response time, short training time, and low throughput delay. The modem is the most technologically advanced rackmount modem on the market. This User s Guide is designed to let you get your modem up and running as quickly as possible. It contains all the information you need to install and configure your modem. It also contains troubleshooting information in the unlikely event you encounter a problem with your modem XXX Page 1 REV. A

6 Features Though functionally similar to commercial modems, the MD9612FP provides the following unique features that make it well suited for utility and industrial applications. Requires only one rack slot. Operates over voice-band conditioned or unconditioned leased line and pilot wires. Operates without human intervention, making it ideal for unmanned locations. Works within an extended temperature range of -40ºC to +85ºC. Designed with coupling transformers for high-voltage isolation and common mode noise rejection in industrial and commercial environments. Asynchronous data rates (selectable) of 9600, 4800, and bps. Easily accessible DIP switches for user configuration and option selection. Local analog, local digital, and remote digital loopback diagnostics. Applications The MD9612FP modem is designed for point-to-point and multipoint data communications. Figure 1-1 shows a typical multipoint configuration. Host Modem (Rack Mount or MD9612FP) Figure 1-1. Network of Multipoint Configuration XXX Page 2 REV. A

7 There are a number of factors that can affect the network s and modem s operation and performance. These include: Operating speed 2-wire or 4-wire configuration Transmission line characteristics, noise, and line impairments Network configuration (point-to-point or multipoint) Number of nodes on the network XXX Page 3 REV. A

8 Chapter 2 Installation This chapter describes how to install the modem. Unpacking Your Hardware Your package should include: At least one MD9612FP modem This User s Guide (on CD) If your package contents are damaged or missing, please contact your place of purchase immediately. Additional Items You Need To use your modem, you need the following additional items: An Myriad (MDR) Rack from Raymar-Telenetics A two- or four-wire transmission line or leased line Hardware Overview Front View Figure 2-1 shows a front view of the MD9612FP modem. Starting from the top, this view shows: A loopback test switch. See page 21. A set of eight LEDs. See page XXX Page 4 REV. A

9 Figure 2-1. Front View of Modem Component View Figure 2-2 shows the component view of the modem. This view shows: Three configuration switch blocks, designated SW1, SW2, and SW3. See page 7. Jumpers located in various positions on the modem. Do not change or remove the straps from these jumpers. Edge connectors at the back of the modem, which plug into the backplane of an MDR Rack from Raymar-Telenetics XXX Page 5 REV. A

10 Configuration Switch Blocks Edge Connectors Switch Block SW1 Switch Block SW2 Switch Block SW3 Figure 2-2. Component View of Modem XXX Page 6 REV. A

11 Installation Summary The modem installation involves the following steps: 1. Configuring the modem. See below. 2. Connecting to a transmission line. See page Connecting an RS-232 device. See page 20. Configuring the Modem You configure the modem using the three sets of DIP switches on the bottom of the modem. IMPORTANT It is important to follow the three steps described below, in the order shown, to ensure that you configure your modem properly using the modem DIP switches: 1. Use DIP switch 3 (SW3) to configure the modem for your host DTE interface and network topology. Using SW3, you select the modem to operate in highspeed fast-poll or low-speed (FSK) mode. 2. If you set SW3 for FSK mode in step 1, use DIP switch 2 (SW2) to configure the modem for either Bell 202T or ITU-T V.23 compatibility. Otherwise, you can use the modem in fallback mode. 3. Use DIP switch 1 (SW1) to select the modem s transmitter output level and receiver dynamic range. The SW1 settings apply for both high-speed fast-poll and low-speed (FSK) modes XXX Page 7 REV. A

12 Model: MD9612FP SW1 DIP Switch Settings SW1 is an 8-position DIP switch. Table 2-1 shows the modem switch settings for DIP switch SW1. A description of the SW1 switch settings follows the table. Note : SW1 settings apply for both highspeed fast-poll and low-speed (FSK) modes Table 2-1. Modem Switch Settings for DIP Switch SW1 Switches SW1-1 SW1-4: Transmit Level (page 9) SW1-5: Receiver Dynamic Range (page 10) Switch Settings ON OFF (Default) (see Table 2-2 on page 9) 10 to 43 dbm +3 to 30 dbm SW1-6: TX Cable Equalizer (page 10) SW1-7: RX Cable Equalizer (page 10) SW1-8: Anti-streaming (page 10) Enabled Enabled Active Disabled Disabled Inactive XXX Page 8 REV. A

13 SW1-1 through SW1-4 Transmit Level Switches SW1-1 through SW1-4 adjust the modem s transmit level. Table 2-2 shows the transmit levels you can select using these switches. Table 2-2. Transmit Levels SW1 through SW4 Switch Settings Transmit Level SW1-1 SW1-2 SW1-3 SW1-4 0 dbm OFF OFF OFF OFF 1 dbm OFF OFF OFF ON 2 dbm OFF OFF ON OFF 3 dbm OFF OFF ON ON 4 dbm OFF ON OFF OFF 5 dbm OFF ON OFF ON 6 dbm OFF ON ON OFF 7 dbm OFF ON ON ON 8 dbm ON OFF OFF OFF 9 dbm ON OFF OFF ON 10 dbm ON OFF ON OFF 11 dbm ON OFF ON ON 12 dbm ON ON OFF OFF 13 dbm ON ON OFF ON 14 dbm ON ON ON OFF +3 dbm ON ON ON ON XXX Page 9 REV. A

14 SW1-5 Receiver Dynamic Range SW1-5 ON = 10 to 43 dbm OFF = +3 to 30 dbm For a low receive signal level, set SW1-5 to ON ( 43 dbm ). For short distances or to select a strong receive signal, set SW1-5 to OFF. SW1-6 and SW1-7 Cable Equalizer (Fast-Poll Mode Only) SW1-6 SW1-7 ON = Enable TX Cable Equalizer OFF = Disable TX Cable Equalizer ON = Enable RX Cable Equalizer OFF = Disable RX Cable Equalizer To improve or extend the modem s polling performance, use the fixed Compromise Cable Equalizer when polling on long metallic circuits. The cable equalizer is active only when the modem is in fast-poll mode (SW3-1 set to OFF). SW1-8 Anti-streaming SW1-8 ON = Anti-streaming active OFF = Anti-stream inactive Typically, anti-streaming is used in multi-point applications to prevent a malfunctioning slave modem from occupying the line indefinitely. When anti-streaming is active, the modem can transmit data for a maximum of 27 seconds before the transmitter turns off automatically. The modem then looks for an ON-to-OFF Request To Send (RTS) transition before proceeding with normal operation. Anti-streaming can be selected in either high-speed or low-speed mode XXX Page 10 REV. A

15 SW2 DIP Switch Settings SW2 is an 8-position DIP switch. Table 2-3 shows the modem switch settings for DIP switch SW2. A description of the SW2 switch settings follows the table. Table 2-3. Modem Switch Settings for DIP Switch SW2 Switches ON Switch Settings OFF (Default) SW2-1: FSK Mode (page 12) V.23 Bell 202 SW2-2: Receiver Squelch (page 12) (valid for FSK mode, 2-wire half-duplex operation only) SW2-3: FSK Soft Carrier (page 13) Turnaround Squelch (Bell 202): 8ms Turnaround Squelch (V.23): 150ms Disabled Turnaround Squelch (Bell 202): 0ms Turnaround Squelch (V.23): 0ms Enabled SW2-4 and SW2-5: FSK RTS-CTS Delay (page 13) SW2-6: FSK CD Delay (page 13) SW2-7: Remote Loopback (page 14) SW2-8: Reserved (Test Only) (page 14) 23ms Enabled Test (see Table 2-4) 6ms Disabled Normal XXX Page 11 REV. A

16 SW2-1 FSK Mode SW2-1 ON = ITU-T V.23 mode OFF = Bell 202 mode The modem has two FSK modes: Bell 202, which supports data rates from 0 to 1800 bps ITU-T V.23, which supports data rates from 0 to 1200 bps SW2-1 configures the modem for either of these FSK modes. Setting SW2-1 to ON selects ITU-T V.23 mode. In this mode, the modem complies with ITU-T (CCITT) recommendation V.23 with the following parameters: Mode 2 modulation only No backward channel No provisions for disablement of echo suppressors DTR (circuit 108) is ignored Setting SW2-1 OFF selects Bell 202 mode. SW2-2 Receiver Squelch (FSK Mode 2-Wire Half-Duplex Only) SW2-2 ON = 8ms for Bell 202, 150ms for ITU-T V.23 OFF = 0ms SW2-2 configures the turnaround squelch delay and is valid when the following are active: FSK mode (SW3-1 ON) 2-wire half-duplex operation (SW3-7 ON) Setting this switch to OFF configures the modem to enable its receiver immediately after the Request To Send (RTS) signal is turned off. When this switch is set to OFF and the modem is configured for 2-wire, halfduplex mode (SW3-7 ON), the modem squelches the receiver after RTS is turned off to prevent far-end echoes from causing data errors. The duration that the modem squelches the receiver is either: 8 milliseconds if the modem is configured for Bell 202 mode (SW2-1 OFF) 150 milliseconds if the modem is configured for ITU-T V.23 mode (SW2-1 ON) XXX Page 12 REV. A

17 SW2-3 FSK Soft Carrier (Bell 202 FSK Mode Only) SW2-3 ON = None OFF = 8ms SW2-3 controls the soft carrier and is valid for Bell 202 FSK mode only (SW2-1 set to OFF). Setting this switch to OFF configures the modem to transmit a 900 Hz soft carrier to the remote modem for 8 milliseconds after RTS is turned off. Setting this switch to ON prevents the modem from transmitting a soft carrier after RTS is turned off. SW2-4 and SW2-5 RTS-CTS Delay (Bell 202 Mode Only) Switches SW2-4 and SW2-5 determine the duration of the RTS-CTS delay in Bell 202 mode. Table 2-4 shows how to set these switches to select the appropriate setting. Table 2-4. RTS-CTS Delay Settings in Bell 202 Mode To Select a Delay of Set SW2-4 to And Set SW2-5 to 8ms OFF OFF 33ms OFF ON 59ms ON OFF 219ms ON ON When the modem is configured for V.23 operation (SW2-1 ON), the RTS- CTS delay is fixed at 33 ms. SW2-6 FSK CD Delay (Bell 202 Mode Only) SW2-6 ON = 23ms OFF = 6ms SW2-6 selects the FSK CD delay and is valid when Bell 202 mode is active (SW2-1 OFF). Setting SW2-6 ON configures the modem to turn on CD 23 milliseconds after it detects a valid carrier signal. Setting this switch to OFF configures the modem to turn on CD 6 milliseconds after it detects a valid carrier signal. This switch setting is deactivated when the modem is configured for V.23 mode (SW2-1 ON) and a delay of 18 milliseconds is used instead XXX Page 13 REV. A

18 SW2-7 Remote Loopback SW2-7 ON = Loopback enabled OFF = Loopback disabled During instances of channel noise, the modem may mistake a received preamble as a request to go into remote digital loopback. Setting SW2-7 to OFF prevents the modem from participating in a remote digital loopback with another modem. SW2-7 does not prevent the modem from sending a remote digital loopback request to a remote modem. SW2-8 Reserved (Test Only) SW2-8 Must be OFF SW2-8 must be in the OFF position for normal operation. SW3 DIP Switch Settings SW3 is a 10-position DIP switch. Table 2-5 shows the modem switch settings for DIP switch SW3. A description of the SW3 switch settings follows the table. Table 2-5. Modem Switch Settings for DIP Switch SW3 Switches Switch Settings ON OFF (Default) SW3-1: Fast Poll/FSK (page 15) FSK Fast Poll Auto- Rate SW3-2: Data Rate (page 15) 4800 bps 9600 bps SW3-3: Async Character (page 16) 11 bits 10 bits SW3-4: Auto RTS (page 15) Enabled Disabled SW3-5: Transmitter Termination (page 16) SW3-6: Reserved (Test Only) (page 16) Switched by RTS Test 600 Ω Normal SW3-7: 2- or 4-wire (page 17) 2-wire, half-duplex 4-wire, fullduplex SW3-8: Carrier Control (page 17) Constant Switched SW3-9: Rx Termination (page17) 600 Ω High Rx Impedance SW3-10: Signal Ground and Earth Ground Option (page 17) Connected Separated XXX Page 14 REV. A

19 SW3-1 Fast Poll Auto Rate/FSK SW3-1 ON = Low-Speed Mode (FSK) OFF = High-Speed Mode (Fast Poll) The modem has two operating modes: FSK mode, which supports data rates from 0 to 1800 bps. Fast-poll mode, which supports data rates of 4800 and 9600 bps. SW3-1, along with the Data Rate Selector (DRS) pin on the modem s RS- 232 connector, configures the modem for either FSK or fast-poll mode. Table 2-6 shows how SW3-1 and the DRS signal configure the modem for these operating modes. Table 2-6. Modem Operating Mode To Select Set SW3-1 to And the DRS Signal Fast-poll mode OFF Is not connected or is set HIGH FSK mode OFF Is set LOW FSK mode ON Doesn t care You should use the DRS signal in RTS control mode. It does not work in either constant carrier mode (SW3-8 set to ON) or in the auto-rts mode (SW3-4 set to ON). The DRS signal is only sampled when the transmitter is idle (when not sending a preamble, data, or a turn-off sequence). Note that the DRS control both the transmitter and receiver. If DRS changes states while the modem is receiving a preamble, data, or a turnoff sequence, the state of the receiver is unknown until the carrier drops and a new preamble is received. We recommend that the DRS does not change states until both the local and remote modems transmitters are in the idle state. When they are, both the local and remote modems DRS signal should change states. SW3-2 Data Rate (Fast-Poll Mode Only) SW3-2 ON = 4800 bps OFF = 9600 bps SW3-2 configures the modem speed. When the modem is in high-speed fast-poll mode (SW3-1 OFF), setting SW3-2 ON selects 4800 bps, while setting SW3-2 OFF selects 9600 bps XXX Page 15 REV. A

20 SW3-3 Async Character (Fast-Poll Mode Only) SW3-3 ON = 11 bits OFF = 10 bits Switch SW3-3 selects whether the async character is 10 or 11 bits long. When the modem is in high-speed fast-poll mode (SW3-1 OFF), setting SW3-3 ON selects an 11-bit async character, while setting SW3-3 OFF selects a 10-bit async character. SW3-4 Auto RTS (Fast-Poll Mode Only) SW3-4 ON = Enable Auto RTS OFF = Disable Auto RTS For data terminals that do not support hardware RTS, set SW3-4 to ON to enable auto RTS mode. In this mode, TXD is detected at the modem and an internal RTS signal is turned ON. After training completes, the TXD is transmitted to the remote modem. The transmitter turns off if no TXD is detected after 1 character length of idle time. Auto RTS is used in fast-poll mode only (SW3-1 set to OFF). SW3-5 Transmitter Termination SW3-5 ON = Switched by RTS OFF = 600 Ω SW3-5 is used for multi-point configuration networks. When multiple modems are connected on the same metallic circuit: The transmitter termination should be of high impedance if the modem is not transmitting. The transmitter is only terminated with 600 ohms when RTS is asserted. This configuration should be used for all slave modems to prevent the transmitting modem from being unnecessarily burdened. To select this configuration, set SW3-5 ON on the slave modems. If you use the modem with transmission lines that are transformer-coupled, or with an impedance-isolated network (such as a transformer bridge), set SW3-5 to OFF for proper operation. SW3-6 Reserved (Test Only) SW3-6 Must be OFF SW3-6 must be in the OFF position for normal operation XXX Page 16 REV. A

21 SW3-7 2-/4-Wire Operation SW3-7 ON = 2-Wire, Half-Duplex Mode OFF = 4-Wire, Full-Duplex Mode SW3-7 configures the modem for 4-wire full-duplex or 2-wire half-duplex operation. SW3-8 Carrier Control SW3-8 ON = Constant OFF = Switched SW3-8 selects either constant or switched carrier. Constant carrier allows DTEs, such as asynchronous dumb terminals or RTUs, to operate with modems, without the input RTS signal. When constant carrier mode is enabled (SW3-8 set to ON), the modem forces the transmit carrier active and the RTS-CTS delay is minimum (<0.5 ms.). You can use constant carrier in 4-wire, point-to-point or multi-point applications (from master to slave modems). In switched-carrier mode (SW3-8 set to OFF), the RTS/CTS delay is active. SW3-9 RX Termination SW3-9 ON = Enable Rx Termination OFF = Disable Rx Termination SW3-9 selects whether RX termination is enabled for a modem. If you set this switch ON, the receiver is terminated with 600 Ω. If you set this switch OFF, the receiver is not terminated. SW3-10 Grounding Option SW3-10 ON = Signal Ground and Earth Ground are Connected OFF = Signal Ground and Earth Ground are Separated XXX Page 17 REV. A

22 Installing the Modem After you set the modem s configuration switches, you can now install it in a slot within an MDR Rack from Raymar-Telenetics. The modem is installed or replaced from the front of the modem cage or modem rack, without disturbing the cable connections on the back. The modem can be installed and removed without having to remove power from the modem cage or modem rack. Special tools or test equipment are not required for installing the modem. 1. Wear an antistatic wrist strap over your wrist on your bare skin (not over a shirt or jacket). 2. Remove the wrapping that is protecting the modem. 3. Hold the modem so the front panel LEDs are facing you and the edge connectors are pointing to the backplane of the modem rack. 4. Install the modem into the selected slot in the modem rack (see Figure 2-3). 5. Push firmly on the modem to seat it properly into the slot and backplane. The back of the modem rack contains the connectors for interfacing to the Data Terminal Equipment and communications line. Figure 2-4 shows how the modems look when installed in the rack. 6. Fasten the two thumb screws to secure the modem. Figure 2-3. Installing the Modem XXX Page 18 REV. A

23 Figure 2-4. Modems Installed in the Rack Connecting to a Transmission Line Modular Jack Connectors The rear panel of the modem rack has an 4-pin RJ-11 jack for each slot. After you install the modem into a slot, connect the slot s corresponding RJ-11 jack to a leased line XXX Page 19 REV. A

24 Leased lines have four contacts: a transmit (Tx) pair and a receive (Rx) pair. For communication to occur: The Rx line of the modem cage or modem rack RJ-11 jack must connect to the Tx line of the other modem. The Tx line of the modem cage or modem rack RJ-11 jack must connect to the Rx line of the other modem. For more information, refer to the documentation that came with your modem cage or modem rack. Connecting an RS-232 Device The modem cage or modem rack has different RS-232 options for accepting an attached RS-232 (RTU) device. Your version may have a female 25-pin RS-232 connector for each slot in the modem cage or modem rack XXX Page 20 REV. A

25 LEDs The front panel of the modem provides the LEDs shown in Table 2-7. Table 2-7. Modem LEDs LED Color Description Power Green Power RTS Yellow Request To Send CTS Yellow Clear To Send TxD Yellow Transmit Data RxD Yellow Receive Data DCD Yellow Carrier Detect ALB Red* Analog Loopback DLB Red* Digital Loopback * When the modem is in remote loopback, both the ALB and DLB LEDs go ON. Loopback Control Switch The front panel of the modem has a push button for initiating the following loopback diagnostic tests: Local analog loopback started by pressing the button one time. Local digital loopback started by pressing the button two times. Remote digital loopback set the local modem s RTS signal to low. Then press the modem s diagnostics button three times and raise the local modem s RTS signal to start the test. The ALB and DLB LEDs go ON on the remote modem when the modem is in Remote Digital Loopback. This test is available in Fast Poll mode only. Switch 2, position 7 must be ON on the remote modem to enable remote digital loopback. Figure 2-6 illustrates these three diagnostics XXX Page 21 REV. A

26 Figure 2-6. Loopback Diagnostics XXX Page 22 REV. A

27 Appendix A Troubleshooting In the event you encounter a problem using your modem, refer to the troubleshooting information in this appendix. To troubleshoot the power supply and backplane on the modem rack, refer to the documentation that came with your modem rack. IMPORTANT If you encounter a problem with your modem, be sure the modem switches are set to the appropriate positions. If a switch is halfway between an on and off setting, the modem will not operate properly. Problem Solving Table A-1 offers troubleshooting solutions for modem problems. Table A-1. Troubleshooting Suggestions If Modem does not respond and all LEDs are off. Modem does not receive data, and the DCD and RxD LEDs are off. The RTS, CTS, and TxD LEDs do not blink. Perform These Procedures Check the modem rack power supply module(s). The receive line pair may be disconnected from the modem. Make sure the transmission line connection to the rear panel of the modem rack is accurate and secure. The receive signal level may be below the CD threshold. Set SW1-5 ON to see whether configuring the modem for a 43 dbm threshold resolves the problem. The attached terminal or DTE may not be sending data to the modem. Verify that data is being transmitted. If data is being transmitted, make sure the RS-232 cable is sound and securely connected to the modem and terminal or DTE XXX Page 23 REV. A

28 Appendix B Specifications General Specifications Data rate: Data format: DTE interface: 9600, 4800, or bps asynchronous 8 or 9 data bits with 1 or more stop bits EIA RS-232 or V.24 compatible Line conditions: TELCO Voice band 4- or 2-wire leased line, conditioned or unconditioned Private metallic circuits up to 9.5 miles (24 AWG) without cable equalizer. Up to 15.0 miles (24 AWG) with TX and RX cable equalizer Operating modes: 2-wire half-duplex or 4-wire full-duplex Modulation: High-speed fast poll Raymar-Telenetics proprietary FSK, Bell 202T compatible Mark = 1200 Hz Space = 2200 Hz Soft Carrier = 900 Hz Equalizer: RTS-CTS Delay: Receiver dynamic range: Operating temperature: Automatic, adaptive 23 ms. (fast poll) 8, 33, 59, or 219 ms (FSK) 0 to 30 dbm or 10 to 43 dbm -40 C to +85 C Surge protection: Leased line, up to 15KV Carrier Control: Constant or switched, DIP switch selectable XXX Page 24 REV. A

29 Carrier loss recovery: Train on Data Throughput delay: Less than 10 milliseconds for fast polling. Auto RTS: Support DTE without hardware RTS (high speed only) Anti-Streaming: 27-second timer to prevent transmitter lock-up network Mechanical Specifications Dimensions: Weight: 7.25 inches deep x 5.25 inches high x.77 inches thick 4.5 ounces (card only) XXX Page 25 REV. A

30 Back-to-Back Connections to a Second Modem Rx Rx Tx Tx Rx Rx Tx Tx Modem 1 Modem 2 See page 24, Figure D-3. RS-232 (RTU) Interface Signal Name Modem Input/Output DB25 Pin Description Earth GND 1 Earth Ground TXD Input 2 Transmit Data RXD Output 3 Receive Data RTS Input 4 Request To Send CTS Output 5 Clear To Send DSR Output 6 Data Set Ready (Modem Ready) SG - 7 Signal Ground DCD Output 8 Data Carrier Detected DTR Input 20 Data Terminal Ready (Host Ready) XXX Page 26 REV. A

31 Environmental Specifications Operating temperature: -40 to + 85 o C Storage temperature: Operating humidity: Isolation: Surge protection: -40 to +125 o C 5 to 95 %, non-condensing 3750 V RMS Leased line up to 15K VA XXX Page 27 REV. A

32 One Year Limited Hardware Warranty Appendix C Limited Product Warranty Raymar Information Technology, Inc., dba Raymar-Telenetics, warrants their products against defects in hardware, material and workmanship under normal use for one (1) year from the date of purchase. Raymar will, at no charge, either repair the product (with new or reconditioned parts), or replace it (with a new or reconditioned product). Repaired replacement products are warranted for either 90 days or the remainder of the original warranty period, whichever is longer. This warranty extends to the original end-user only. What This Warranty Does Not Cover This warranty does not cover: (a) software; (b) installation or service of the product; (c) conditions resulting from consumer damage such as improper maintenance or misuse, abuse, accident or alteration; (d) all plastic surfaces (including display screens) and all other exposed parts that are scratched or damaged due to normal use; (e) operation of our products with equipment not supplied by Raymar (f) products which have had the serial number removed or made illegible; or (g) products rented to others. This warranty applies only to hardware products manufactured by or for Raymar Information Technology, Inc. and identified by the Raymar-Telenetics trademark, trade name or product identification logo affixed to them. Refer to the Service and Support section of the User s Guide for service after the warranty expires. No warranty is made as to coverage availability or grade of service provided by the carrier. General Provisions This warranty sets forth Raymar s entire hardware responsibilities regarding this product. Repair, replacement or refund of the purchase price is at Raymar s discretion. THIS WARRANTY IS GIVEN IN LIEU OF ALL OTHER EXPRESS WARRANTIES, IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND ARE LIMITED TO THE DURATION OF THIS LIMITED WARRANTY. IN NO EVENT SHALL RAYMAR BE LIABLE FOR DAMAGES IN EXCESS OF THE PURCHASE PRICE OF THE PRODUCT, FOR ANY LOSS OF USE, LOSS OF TIME, INCONVENIENCE, COMMERCIAL LOSS, LOST PROFITS OR SAVINGS, OR OTHER INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THIS RAYMAR PRODUCT, TO THE FULL EXTENT SUCH MAY BE DISCLAIMED BY LAW. WITHOUT LIMITING THE FOREGOING, RAYMAR SHALL HAVE NO LIABILITY FOR ANY DATA STORED IN OR USED WITH THE PRODUCT, INCLUDING THE RECOVERY COSTS OF SUCH DATA OR PROGRAMS. State Law Rights SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS. THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY TO YOU. This warranty gives you specific legal rights, and you may also have other rights which vary from State to State. Provincial Law Rights SOME PROVINCIAL LAWS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF IMPLIED WARRANTIES, THE EXCLUSION OR LIMITATION OF WARRANTY COVERAGE IN CERTAIN SITUATIONS. SOME OF THE ABOVE LIMITATIONS OR EXCLUSIONS CONTAINED IN THIS LIMITED WARRANTY MAY NOT APPLY TO YOU. This warranty gives you specific rights, and you may have other rights which vary from province to province. How To Use Raymar s Limited Warranty Service To take advantage of this warranty, you must do the following: If you are having trouble with your product, contact Raymar service using the appropriate number from the Service and Support section of the User s Guide. If it is determined that your product requires service, you will be issued a Return Materials Authorization (RMA) form. Pack the defective product securely for shipping. Include only the units preapproved by service on your RMA form. This warranty is void if the product is damaged in transit, you must insure your shipment. Ship the defective product, proof of date of purchase, and the RMA form to the address specified. Display your RMA number prominently on the outside of the shipping box. Customer is responsible for freight in, door to door. Raymar is responsible for return shipping costs. To ensure prompt service, please write on the RMA form a brief description of the problem you are experiencing with the product. Raymar Information Technology, Inc Roseville Road Sacramento, CA Service Hotline (800) or to techsupport@raymarinc.com XXX Page 28 REV. A

33 Appendix D RMA Procedure Before returning any Raymar-Telenetics product, an RMA number must be obtained. The most convenient way to obtain an RMA number for a product purchased from Raymar-Telenetics is to call When doing so, please have the following information ready: - Company name - Full billing address, as well as the address for the location where the product should be returned once repaired or replaced - Telephone & Fax numbers - address - Product model number and serial number For each item being returned, please include the product model number, the serial number, a description of the problem being encountered, and the cause of the problem (if known). Please note that prior to authorizing a return, a product support specialist may call to verify that the product is properly installed or may ask you to perform tests to insure that the product has actually failed. The product must be properly packed and returned to: Raymar-Telenetics 7325 Roseville Road Sacramento, CA The RMA number must be legibly displayed on the shipping carton. Raymar-Telenetics will not be responsible for any product returned without an RMA number. If the product is out of warranty, estimates for repair rates and any applicable shipping costs will be communicated by a customer service representative. Currently, Raymar- Telenetics accepts purchase orders or credit cards as payment methods. Repairs currently require 5 10 business days and are returned via UPS Ground. All repaired products carry a 90-day warranty, beginning from the date they are shipped from Raymar s facility XXX Page 29 REV. A